The restoration of the Doll 365 is now underway.
The 1st repair completed is the bent crankshaft. The shaft isn't perfectly straight, but it's much better than before. Tapping with a soft faced hammer did the trick. A purpose-built clamping and gauging fixture made the job simpler. That fixture allowed rotation of the shaft to gauge the runout, and tightly clamping the shaft for tapping with the hammer.
https://youtu.be/T5ybLjTpdMUhttps://youtu.be/iF8NPKiuTkoShaft Clamping Fixture [ Guests cannot view attachments ]
Happy Steaming
Much improved! At least as good if not better than new.
Well executed.
Congratulations.
Excellent work! [ Guests cannot view attachments ]
Paula
Thanks for all of the encouragement. Half of the crankshaft repair battle was mustering enough courage to hit an irreplaceable part with a hammer.
Paula, you are very correct about how prone this Doll's crankshaft is to bending because it doesn't have a shaft support outboard of the flywheel. Plus, due to the crank supports being a bit worn, there was enough play that the bend occurred in the closest connecting rod journal. Going forward, this engine will be gently handled and operated.
Happy steaming!
i'M musically inclined. Brass hammer in time usually gets me there. Good Job, looks great!
If all goes well, the Doll may be ready for steam later this weekend or early next week.
The crankshaft end play was a bit much and has been reduced using brass shim washers. I am now working to address excessive connecting rod - rod journal clearance (worst one was 0.018 in.) using inserts made from brass shim stock. A wrap-around insert seems to work well and the shape locks into place in the rod and doesn't spin in the rod.
After that, all that remains is a solder repair on the burner and installing new seals on the boiler ports.
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
Interesting idea on the rod bearing insert . Looks like a good repair .
nicely done, looks near dead level.
I really like that one-piece shim insert as it doesn't take three hands to install and keep it in place!
One replacement valve handle down, one to go. Not precisely the same, but I'd say close enough.
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
I'd say close enough too ... and lookin' plenty good besides!
1st run on air after partial overhaul.
The crankshaft is much straighter than before. Both piston connecting rods and both valve eccentric rods required inserts due to excessive clearances. This engine has seen a lot of use and not enough lubrication. Previous owners had disassembled the engine and then reassembled without attention to detail, as I found multiple issues including one valve eccentric rod cap upside down. I looked at as many pictures as I could find in order to put things back together correctly.
I was hoping it would be a bit quieter, but it seems to run just fine.
Happy Steaming!
https://youtu.be/aNiRPH8mrAI